In this paper, the broader perspective of green hydrogen (H2) supply and refueling systems for aircraft is provided as an enabling technology brick more climate friendly, H2-powered aviation. For this, two H2 demand scenarios at exemplary airports are determined 2050. Then, general requirements liquid (LH2) setups in airport environment derived techno-economic models LH2 storage, liquefaction t...

Abstract Hydrogen refuelling stations are established in various places nowadays. With the development on hydrogen under higher pressures, risk of leakage devices, specifically compressor and dispenser, draws increasing concerns for these stations. In this paper, different cases combustion evaluated devices with respect to conditions, based prototypes designed a high-pressure station China. The...

SIEGEL, J. M., M. B. STERMAN AND S. ROSS. Automatic detection and operant reinforcement of slow potential shifts.PHYSIOL. BEHAV. 23(2) 411-413, 1979.—A technique for the automatic detection and operant reinforcement of slow potential (SP) changes is described. The SP shift detection device contains 3 inhibit channels to control sources of potential artifact including: vertical EOG, horizontal E...

One of the most critical barriers to widespread adoption of electric cars is the lack of charging station infrastructure. Although it is expected that a sufficient number of charging stations will be constructed eventually, due to various practical reasons they may have to be introduced gradually over time. In this paper, we formulate a multi-period optimization model based on a flow-refueling ...

Publishing in economics proceeds much more slowly on average than the natural sciences, and other social sciences finance. It is even relatively slower at extremes. We demonstrate that of lag, especially extremes, arises from authors' dilatory behavior revising their work. The marginal product an additional round re-submission top journals productive subsequent citations; but conditional re-sub...

This work expounds on implementing an effective dynamic ðs; SÞ policy to solve a liner shipping refueling and speed determination problem under both bunker prices and consumption uncertainties. While solving an optimization model which incorporates a continuous distribution is extremely challenging, we use sample average approximation method to solve it. However, the resulting problem is still ...

A self-circulation system is presented for a self-refueling insect-mountable biofuel cell (BFC) using trehalose, the main sugar of insect hemolymph. The maximum power density of 10.5 μW/cm was obtained from cockroach hemolymph (CHL) with added trehalase and mutarotase. The electrodes were protected by a dialysis membrane to prevent decrease of open-circuit voltage by adsorption of proteins in t...

Guarding the perimeter of an area in order to detect potential intruders is an important task in a variety of security-related applications. This task can in many circumstances be performed by a set of camera-equipped unmanned aerial vehicles (UAVs). Such UAVs will occasionally require refueling or recharging, in which case they must temporarily be replaced by other UAVs in order to maintain co...